Just another update

2015-02-20 00:35:01 -05:00 · 2015-02-20 00:35:01 -05:00 · 00a190b0a6
commit 00a190b0a6
parent a25938f123
6591 changed files with 94363 additions and 23227 deletions
--- a/Task/Permutations-Derangements/Groovy/permutations-derangements-1.groovy
+++ b/Task/Permutations-Derangements/Groovy/permutations-derangements-1.groovy
@ -4,6 +4,6 @@ subfact = { BigInteger n -> (n == 0) ? 1 : (n == 1) ? 0 : ((n-1) * (subfact(n-1)

 def derangement = { List l ->
    def d = []
-    l.eachPermutation { p -> if ([p,l].transpose().every{ it[0] != it[1] }) d << p }
+  if (l) l.eachPermutation { p -> if ([p,l].transpose().every{ pp, ll -> pp != ll }) d << p }
    d
 }